No Lens Lasers

No lens laser stack

Impressive, technology like this might lead to all sorts of wonderful things. I’m thinking video projectors that use lasers and that have no moving parts of nasty super hot lamps (just super hot lasers, have to work on that…)

Researchers have now demonstrated a plasmonic collimator that utilizes grooves etched directly into the semiconductor laser facet. If the technique is adopted — Harvard University has applied for a patent on the process — then semiconductor lasers can be downsized to a bare die without a lens.

Lasers need lenses no more

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